What is Vitamin E Called?
Vitamin E is also known as tocopherol or alpha-tocopherol. There are several other names and forms, depending on the specific type and source.
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Tocopherol: This is a general term encompassing a group of related compounds with vitamin E activity. The name "tocopherol" comes from the Greek words "tokos" (childbirth) and "pherein" (to bear), reflecting its initial discovery as a factor essential for reproduction in rats. [Wikipedia]
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Alpha-Tocopherol: This is the most biologically active form of vitamin E found in the body and the one most often referred to when discussing vitamin E's benefits. It's commonly found as RRR-alpha-tocopherol in natural sources. [ODS Fact Sheet, MedlinePlus Medical Test] Synthesized vitamin E is often called all-rac-alpha-tocopherol. [PMC]
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Other Tocopherols: Besides alpha-tocopherol, there are other tocopherols (beta, gamma, and delta) with some vitamin E activity, although less potent than alpha-tocopherol. [University of Rochester Medical Center]
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Tocotrienols: These are chemically similar to tocopherols but have a different chemical structure. They also exhibit vitamin E activity. [Versus Arthritis, PMC]
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Specific Forms: Vitamin E is available in various forms such as d-alpha tocopheryl acetate, d-alpha tocopherol, and dl-alpha tocopherol. [Mayo Clinic]
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Vitamin E Acetate: This is a specific form of vitamin E that has been implicated in EVALI (E-cigarette, or Vaping Product, Use Associated Lung Injury). [Yale Medicine]
The name used often depends on the context – whether discussing the general class of compounds, the most active form, or a specific type used in supplements or research. For example, while food labels might not always specify vitamin E content unless required by the FDA, [ODS Fact Sheet] a medical test might refer to it as a tocopherol test. [MedlinePlus Medical Test]
